So when Yvonne found out she was pregnant naturally, against all the odds, they decided to share it not just with friends and family, but millions of TV viewers.

“We have been through so much to have our little girl, we want to give other people hope, and show it can happen,” smiles Yvonne.

Now baby Arabella’s birth at Liverpool Women’s Hospital will be filmed for Channel 4’s One Born Every Minute.

“It is a very special event and, for us, we know it will be a one off. It isn’t going to happen again,” says Gary.

It is a happy ending for the Waterloo couple who only met four years ago.

Gary, 48, is a health care assistant for Knowsley Drug and Alcohol Team working with recovering addicts, and Yvonne, 41, is a claims handler for Motability in Liverpool.

Neither of them had given too much thought to children but, once they met, they knew they wanted to have a family together to cement their relationship: “We were so much in love – still are,” says Gary.

The couple were thrilled when Yvonne became pregnant and heartbroken when she lost the baby at just eight weeks.

“It hit me like a freight train,” adds Gary. “So goodness knows what it was like for Yvonne.”

Yvonne was referred to the Women’s Hospital for tests where she was shown to have a low egg count and the couple were warned they might never have a child naturally.

“I started on IVF quite quickly because of my age,” reveals Yvonne. “I had two embryos implanted on my 40th birthday.

“It was our one and only chance at IVF because the NHS stops funding it beyond that age so when we were told that hadn’t worked we thought that was it.”

It was in March this year, when Gary and Yvonne had put family plans out of their minds, that they found out she was pregnant.

Clearly delighted, though worried because of their earlier experience, the couple monitored every milestone, before tweeting that Yvonne had reached 12 weeks: “The baby’s first scan picture got 9,000 views,” says Gary.

The pregnancy has gone well and now the pair can’t wait to welcome their little girl into the world and they are so excited, they want the everyone else to watch it too.

They have agreed for the birth to be filmed by the One Born Every Minute team who will be capturing life at the Women’s from October through to Christmas.

“I love the progamme and I want people to see that, whatever your age, whatever problems you might be having, a family can happen for you,” says Gary.

“And I’m not worried about people watching the birth,” says Yvonne. “Once I go into labour, I’m sure I won’t be worrying about anything else!”

If you are interested in having your birth filmed contact Dragonfly Productions on 020 70332311 or email oneborn@dragonfly.tv